The portion of spherical mirror from which reflection takes place is
b) radius of curvature
c) aperture
a) focal length
d) both (a) & (b)
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Explanation:
Aperture of mirror: The portion of mirror from which reflection of light takes place. Principal focus of concave mirror: The point on the principal axis to which all the light rays which are parallel to the axis converge after reflection from the concave mirror.
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